chemical engineering materials and construction MCQs – Page 17

Practise multiple-choice questions from chemical engineering materials and construction for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering materials and construction Mcqs
321. Mixing vessel used for the chlorination of methane to produce methyl chloride is made of___________________?
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A. Aluminium

B. High carbon steel

C. Copper

D. Cast iron
322. Which of the following comprises of hydrocarbons ?
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A. Glass

B. None of these

C. Rubber

D. Mica flakes

323. Stainless steel contains_________________?
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A. Copper

B. Chromium and nickel

C. Vanadium

D. Aluminium

324. The crystal structure of most of the common metals is_____________________?
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A. None of these

B. Hexagonal

C. Cubic

D. Orthorhombic

325. To improve the machinability of steel by its softening, it is subjected to __________________?
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A. Cold working

B. Heating

C. Shot blasting

D. Annealing
326. Spark plugs are made of______________________?
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A. High alumina ceramic

B. Metallic carbides

C. Carborundum

D. Corundum

327. Bearings subjected to light load are made of________________?
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A. Monel

B. Phosphorous bronze

C. Silicon bronze

D. White metal

328. _____________ is added in low carbon steel to raise its yield point?
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A. Manganese

B. Sulphur

C. Phosphorous

D. Silicon

329. The chlorinator used in the manufacture of DDT is made of___________________?
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A. Bakelite

B. Glass

C. Glass lined steel

D. Teflon

330. The loss of strength in compression which occurs, when there is a gain of strength in tension due to over loading is called__________________?
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A. Hysteresis

B. Relaxation

C. Hookes effect

D. Bauschinger effect
331. Straight silicon steel (containing Si from 0.5 to 5%) because of their low hysteresis loss and high magnetic permeability are used for electrical appliances. Which of the following electrical appliances made of silicon steel contains maximum percentage of silicon (about 4%) ?
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A. Induction motors

B. Generators and small motors

C. Armature of small motors/generators

D. High frequency transformers
332. Beehive coke ovens are made of ________________ bricks?
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A. Corundum

B. Fireclay

C. Silicon carbide

D. Silica
333. A chemical change takes place when iron_____________?
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A. None of these

B. Is heated

C. Melts

D. Rusts
334. Addition of nickel to copper improves its_________________?
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A. Machinability

B. Hardness

C. Strength

D. Ductility

335. Carbon is present in the combined form (carbide) in case of______________________?
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A. All A., B. & C.

B. Ferroalloys

C. Steel

D. Pig iron

336. Maximum carbon content in any variety of steel can be upto 1.3%. Steel containing 0.4% Carbon is not used for making___________________?
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A. Chisels

B. Bolts

C. Studs

D. Nuts

337. Brine solution is stored/treated in _______________ lined vessels/pipes?
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A. Lead

B. Nickel

C. Rubber

D. Glass

338. Carbon supply in pack carburising process is in the form of_____________________?
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A. Charcoal

B. Hydrocarbon oil

C. Calcium carbide

D. Graphite

339. The bomb in the bomb calorimeter is made of___________________?
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A. Molybdenum stainless steel

B. High silicon iron (14% Si)

C. Mild steel

D. Copper

340. Visco-elastic behaviour of materials which is time dependent is common in______________?
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A. Non-crystalline solids

B. Plastics

C. Crystalline solid

D. Non-crystalline organic polymer